obama has been very weak. mitt romney knows how to guide this country. >> reporter: after the third and final debate, the two candidates remain locked in a close battle and the final two weeks of the campaign could prove to be crucial as voters decide whether to give obama a second term in office or hand the keys to the white house to romney. anthony yazaki, nhk world, boca raton, florida. >> a majority of opinion polls carried out immediately after the debate give a slight advantage to president obama's performance, but both candidates remain neck in neck in terms of voter intentions, indicating that the last two weeks of the campaign will be decisive. we asked professor niche zaki for her take on the final obama/romney showdown. she specializes in u.s. politics and diplomatic history at the university of tokyo. >> i think foreign policy is usually the domain of the incumbent president, and i think president obama used the opportunity quite well by explaining his specific foreign policy agenda and priorities